Massachusetts has undergone significant changes in its knife laws, particularly regarding pocket knives and automatic (switchblade) knives. Here’s a comprehensive overview of what’s legal, what’s restricted, and what every resident or visitor should know.
Pocket Knives: Legal Status and Carry
- Ownership: Pocket knives—typically defined as folding knives with manual opening mechanisms—are generally legal to own and possess in Massachusetts, provided they are not used in a threatening or unlawful manner.
- Open Carry: Open carry of legal pocket knives is permitted. However, carrying large knives or openly displaying any knife in a way that could be perceived as threatening may draw police attention or be deemed a breach of the peace.
- Concealed Carry: Concealed carry laws are stricter. Carrying any knife concealed on your person may be considered illegal, especially if the knife is classified as a “dangerous weapon” or if there is intent to use it unlawfully.
Recent Changes: Switchblades and Automatic Knives
- 2024–2025 Legal Shift: In August 2024, the Massachusetts Supreme Judicial Court ruled that the state’s longstanding ban on automatic (switchblade) knives violated the Second Amendment. As a result, adults can now legally purchase, possess, and carry automatic knives, including OTF (out-the-front) switchblades, provided they comply with other legal stipulations.
- Blade Length: While earlier laws restricted automatic knives to blade lengths of 1.5 inches or less, the new legal landscape allows for longer blades, though specific local rules may still apply.
- Age Restrictions: There is no statewide age restriction for carrying legal knives, but some cities (like Boston and Cambridge) have local rules prohibiting sales or transfers of certain knives to minors.
Location-Based Restrictions
Regardless of knife type, Massachusetts law prohibits carrying knives in certain locations:
- Schools and School Zones: Carrying any knife (including pocket knives) on school property or within 300 feet of a school is illegal without written authorization.
- Government Buildings: Knives are banned in government buildings, courthouses, and similar facilities.
- Other Sensitive Areas: Additional restrictions may apply in certain public spaces or events.
Intent and Use
- Lawful Purpose: Carrying a pocket knife for work, outdoor activities, or utility purposes is generally lawful. Using or carrying a knife with the intent to harm, threaten, or intimidate is illegal and can result in criminal charges.
- “Dangerous Weapon” Classification: If a pocket knife is used or intended to be used as a weapon, it may be classified as a “dangerous weapon,” leading to more severe penalties.
Summary Table: Pocket Knife Laws in Massachusetts (2025)
| Knife Type | Legal to Own | Open Carry | Concealed Carry | Restrictions/Notes |
|---|---|---|---|---|
| Manual Pocket Knife | Yes | Yes | Caution | Not in schools/gov. buildings; intent matters |
| Automatic/Switchblade | Yes (adults) | Yes | Yes | Legal after 2024 ruling; local rules may apply |
| Box Cutters/Utility | Yes | Yes | Caution | Must have lawful purpose; not in schools |
Key Takeaways
- Pocket knives are legal to own and carry in most public places, but not in schools or government buildings.
- Automatic knives (switchblades) are now legal for adults, following a 2024 court ruling.
- Intent, manner of carry, and location are critical—carrying any knife for unlawful purposes or in restricted areas remains illegal.
- Local ordinances may impose additional restrictions, especially for minors.
Always check local laws and use knives responsibly to stay within Massachusetts’ legal boundaries.
Sources:
- https://www.arenaaccessories.com/Big-Changes-in-Massachusetts-Switchblade-Laws-in-2025–What-You-Need-to-Know_b_16.html
- https://nobliecustomknives.com/us-knife-laws/massachusetts-knife-laws/
- https://www.akti.org/the-everyday-knife/
- https://www.akti.org/state-knife-laws/massachusetts/
- https://www.tektoknives.com/blogs/news/massachusetts-knife-law-update-switchblades-now-legal